Sewing-machine folder.



No. 858,709. PATENTBD JULY 2, 1907.

A. H. DE VOE.

SEWING MAGHINBFOLDBR. APPLIOATION FILED no. 21, 1906.

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UNITED STATES PATENT OFFICE.

ALBERT H. DE VOE, OF ELIZABETH, NEW JERSEY, ASSIGNOR TO THE SINGER MANUFACTUR- ING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE FOLDER.

Specification of Letters Patent.

Patented July 2, 1907.

Application filed December 21, 1905. Serial No. 292,686-

To all whom it may concern:

Be it knownthat I, ALBERT H. DE Von, acitizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sewing-Machine Folders, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention has for its object to provide a lapseam folder which is adjustable for different gages of folds and provided with the requisite yielding character to accommodate, without clogging, cross-seams and other variations in thickness of the material operated upon.

The invention consists primarily in a pair of rigid edge-turning scrolls mounted upon a common baseplate to be relatively adjustable and each provided with a lateral lip embraced by the other, one or both of which lips is cut away upon its forward or delivery end-portion and replaced by anedgewise-yielding tongue forming an extension thereof. I

In the accompanying drawings, Figure 1 is a top plan view, Fig. 2 a bottom plan view, Fig. 3 a front end view and Fig. 4 a side or edge view of a folder constructed in accordance with the present invention. Fig. 5 is a partial plan view of the attachment showing the base-plate and the lower scroll with its yielding tongue. Fig. 6 is a detail perspective view of the yielding tongue. Fig. 7 is a plan view of the footpiece carrying the upper scroll, and Fig. 8 an under side view of the upper scroll provided with a yielding tongue.

The attachment .is shown mounted upon a sewing machine bed-plate slide 1 having threaded holes 2 entered by the fastening screws 3 passing through slots 4 and 5 respectively in the foot-piece 6 of the lower scroll 7 and the foot-piece 8 carrying the upper scroll 9, such scrolls being provided each with a laterallyextending material-supporting lip 10 and 11, respectively, embraced by the other scroll, adjoining the curved material-guiding operative portions 7 and 9 respectively.

As represented particularly inFigs. 3 and 5, the forward or delivery end of the lateral lip 10 of the lower scroll 7 is cut away, the portion removed being replaced by the outer end of a fiat tongue 12 carried by a flat spring-blade 13 provided in the rearward end with a screw-hole 14 entered by the fastening screw 15 for securing it ,to the upright flange 16 upon the footpiece 8, the flange 16 having at its upper edge a lateral supporting plate 16 to which the laterally extending wing of the scroll 9 is attached in a manner Well-known.

It will be observed that in the normal operation of the attachment the tongue 12 in the forward contracted portion of the tubular guiding channel will remain in normal position as a continuation of the lip 10,'but

that such tongue will readily yield edgewise under the resilience of the spring-blade 13 when cross-seamsor V other irregularities are introduced into such portion of the folder.

As represented in Figs. 1, 2, 3 and 4, the yielding tongue 12 is applied only to the lower ed ge-guiding member, the delivery end of the opposed member being rigid and unyielding. In. Fig. 8 I have shown .the

lateral lip 11 of the upper edge-guiding member 'cut away, and a laterally-yielding tongue 17, carried by the yielding spring-blade 18 secured by fastening screw 19 to the receivingend of the scroll, applied thereto for vision need be made only to accommodate cross-seams in one of the edge-turning members of the attachment, for which uses the scroll may be provided with a rigid and a yielding supporting lip for the material, as represented in'Figs. 1 to 4 inclusive, either the upper or the lower scroll being provided with the edgewise yielding tongue; but it is evident that both the upper and the lower edge-turning members of the attachment maybe provided each with the yielding part where the attachment is designed for general use.

By providing transverselydisposed slots in the footpieces 6 and 8 for the fastening screws 3, either or both of the edge-guiding members are adapted to be adjusted to form folds of different gages, While the rigidity of their extreme guiding edges at the delivery ends enable them to present the folds to the needles in a uniform width which is not subject to variation when variations in the thickness of the material are encountered, as in certain other styles of folders wherein the component scrolls are mounted to yield bodily relatively to each other. i

It will be observed that the yielding folder shown and described herein possesses all of the advantages of the rigid folders heretofore in use, while involving none of the disadvantages of the folders having yielding operative members previously devised. The body of the lip 10 of the lower scroll 7, as well as that of the corresponding portion of the scroll 9 is rigidly and unyieldingly connected with the foot-piece 8, whereby the heavier part of the edge-turning operation is performed before the material reaches the laterally yielding delivery portions of these members, so that the yielding delivery portion has little work to perform apart from the final shaping of the fold, and may be constructed to yield readily under variations in thickness of the material by reason of cross-seams and the like. By making the yielding tongues 12 and 17 entirely separate from the lips 10 and 11, it is practicable to form such members upon flatwise-yielding spring-blades l3 and 18, respectively, to insure the desired strength and capability to yield edgewise of the tongues.

It is evident that the attachment is susceptible oi material modification in the form and construction of the component parts Without departure from the present invention.

I Having thus set forth the nature of the invention, what I claim herein is,

l. A sewing machine folder comprising two relatively fixed edge-turning scrolls having the-guiding edges of their delivery ends a fixed distance apart. and each hav ing a laterally extending material-supporting lip embraced by the other scroll, one of which lips is provided with a portion adapted to yield edgewise away from the guiding edge of the scroll embracing it and is formed upon a spring-bladc constituting a separate and independent: member of the f0l(l()l 'fl'0l]l said scrolls.

2. A sewing machine folder comprising two rigid1y-sustained edge-turning scrolls having the guiding edges of their delivery ends a fixed distance apart, and each having a laterally extending inatcrial-supporting lip embraced by the other of said scrolls, the delivery end portion of one of said scrolls being cut away and replaced by a separate and independent edgewise-yielding tongue forming a continuation of the rigid portion of said lip.

22. A sewing machine folder comprising two edge-turning scrolls mounted to be relatively adjustable upon a common supporting member, means whereby said scrolls may be rigidly sustained with the guiding edges of their delivery ends in tixed relation for each adjustment, each of said scrolls having a lateral material-s11 iporting lip embraced by the other of. said scrolls and one olf said lips having its delivery end portion cut away, and an edgewise-yieiding tongue forming a continuation of the rigid portion of said lip.

4, A sewing machine [older comprising two rigidly-sustained edge-turning scrolls having the guiding edges of their delivery ends a tixed distance apart: and each having a lateral material-snpporting lip embraced by the other of said scrolls. and one of such lips having its delivery end portion cut away, and a spring-blade secured at one end to a lixed support and having at, its other end a trans verse]y-disposed tongue entering the cutaway portion of said material-supporting lip and forming an edgewiseyielding eontinuation thereol'.

in testimony whereof. I have signed my name to this smeilieation. in the presenee of two subscribing wit" nesses.

Alililqlt'l it. til \tll i.

Witnesses llnnnr l. Alumna. llnxnr i\. Konn'uMANN. 

